To provide a heat exchanger and a vehicle air conditioner with further improved heat exchange efficiency regardless of an operation state.SOLUTION: A heat exchanger comprises: a first heat exchange section which has a first extraction/introduction section where a refrigerant is distributed and a plurality of first heat transmission pipes with respective one ends thereof connected to the first extraction/introduction section; a header pipe which is connected to the other ends of the plurality of heat transmission pipes; and a second heat exchange section which has two or more second extraction/introduction sections where the refrigerant is distributed and a plurality of second heat transmission pipes with one ends thereof connected to the header pipe and the other ends thereof connected to the second extraction/introduction section. In heating operation, the refrigerant is distributed from the first heat exchange section to the second heat exchange section. In cooling operation, the refrigerant is distributed from the second heat exchange section to the first heat exchange section. The second heat exchange section is larger in a heat exchange area, which is an area used for heat exchange between the refrigerant and air, than the first heat exchange section.SELECTED DRAWING: Figure 4
【課題】運転状態によらず熱交換効率がさらに向上した熱交換器、及び車両用空調装置を提供する。【解決手段】熱交換器は、冷媒が流通する1つの第一導出入部、及び、一端が第一導出入部に接続されている複数の第一伝熱管を有する第一熱交換部と、複数の第一伝熱管の他端に接続されているヘッダ管と、2以上設けられ、冷媒が流通する第二導出入部、及び、一端がヘッダ管に接続され、他端が第二導出入部に接続されている複数の第二伝熱管を有する第二熱交換部と、を備え、暖房時には第一熱交換部側から第二熱交換部側に向かって冷媒が流通し、冷房時には第二熱交換部側から第一熱交換部側に向かって冷媒が流通し、第一熱交換部に比べて第二熱交換部の方が、冷媒と空気との熱交換に供される面積である熱交換面積が大きい。【選択図】図4
HEAT EXCHANGER AND VEHICLE AIR CONDITIONER
熱交換器、及び車両用空調装置
2022-04-11
Patent
Electronic Resource
Japanese
IPC: | F28F Einzelheiten von Wärmetauschern oder Wärmeübertragungsvorrichtungen für allgemeine Verwendung , DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS |
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